Basic Science

Len Academy Examination Questions for Basic Science, JSS2, 2nd Term

len Alfred Ajibola - Sat, 25th July, 2020 @ 09:33: AM

Topics in Basic Science

Resources from living things Resources from animals Importance of immunization Types of Carbohydrates: Monosaccharides and Polysaccharides Carbohydrates: Disaccharides and Oligosaccharides Len Academy Examination Questions for Basic Science, JSS2, 2nd Term Len Academy Examination Questions for Basic Science, JSS3, 3rd Term Len Academy Examination Questions for Basic Science, JSS3, 2nd Term Primates: Characteristics of Primates Effects of improper waste management Waste Management: Causes of waste in the society Concept of mass and weight Mineral Salts: Sources, functions and deficiencies of macronutrients Sources, functions and deficiencies of micronutrients Len Academy questions for Basic Science JSS1 Len Academy mid-term test questions for Basic Science JSS1, 2nd Term Microorganisms causing food, water and air borne diseases Vector borne organisms and the diseases they cause Bones of the Human Skeleton Drugs explained with their types and side effects

Academic Questions in Basic Science

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Which of the following diseases is associated with river blindness?

  • A. Anthrax

  • B. Lawnmower Disease

  • C. Onchocerciasis

  • D. Devil's Crunch

  • E. Trypanosomiasis

  • F. Tularemia

The vector for yellow fever is _____.

  • A. Aedes Mosquito

  • B. Female Anopheles Mosquito

  • C. Plasmodium

  • D. Flavivirus

  • E. Black Fly

  • F. Bacillus Anthracis

The bones of the head and face make up the skull. These bones are _____ in number.

  • A. 12

  • B. 14

  • C. 16

  • D. 18

  • E. 20

  • F. 22

Bacteria are not a constituent of our environment.

  • A. True

  • B. False

Below are types of drugs. Which of these is considered as pain killers?

  • A. Stimulants

  • B. Depressants

  • C. Opiods and Morphine Derivatives

  • D. Hallucinogens

  • E. Anabolic Steroids

  • F. Cannabinoids

Which of the following statement is false concerning drugs?

  • A. Drugs can be inhaled

  • B. Drugs can be injected directly into the bloodstream 

  • C. Drugs can be eaten

  • D. Drugs exist exclusively in the forms of tablets and syrups

  • E. Drugs can be placed under the tongue

  • F. Drugs can be taken with water or another liquid

Vaccination involves a process of introducing pathogens or germs into a person in order to prevent such person from the diseases they cause.

  • A. True

  • B. False

With regards to the human health, foreign bodies are best regarded as _____.

  • A. International bodies

  • B. Antilators

  • C. Antibodies

  • D. Antigens

  • E. Antibiotics

  • F. Antidotes


Basic Science Questions, JSS2, Second Term:

1. Which of the following is NOT an animal?

  1. Termite
  2. Cactus
  3. Centipede
  4. Bat

    5. Please read this article here for correct Answer.

 

2. Which of the following is NOT a mammal?

  1. Whale
  2. Shark
  3. Bat
  4. Mouse

 

3. Urea is produced from a process called _____.

  1. Detoxification
  2. Deamination
  3. Ultrafiltration
  4. Selective Reabsorption

 

4. The stimulus picked by the eye is _____.

  1. Chemical
  2. Sight
  3. Vision
  4. Light

 

5. A similar group of fat storage cells found beneath the skin are called _____ tissues.

  1. Connective
  2. Adipose
  3. Epithelial
  4. Vascular

You can attempt Len Academy Questions on various Subjects (with Answers) here.

6. The middle layer of the epidermis is the _____.

  1. Cornified
  2. Granular
  3. Malpighian
  4. Dermis

 

7. The metabolic waste product excreted by the lungs is _____.

  1. Carbon monoxide
  2. Carbon dioxide
  3. Ammonia
  4. Ammonium

 

8. The excretory organ found in flatworms are the _____.

  1. Malpighian tubules
  2. Contractile vacoules
  3. Flame cells
  4. Lenticels

 

9. The functional unit of the kidneys are the _____.

  1. Capillaries
  2. Renal vessels
  3. Nephrons
  4. Hepatocytes

You can read various Motivational Quotes for Students here.

10. The _____ connects the kidneys to the bladder.

  1. Ureter
  2. Urethra
  3. Renal Artery
  4. Renal vein

 

11. The male sex hormone is the _____.

  1. Spermatozoa
  2. Semen
  3. Testosterone
  4. Oestrogen

    5. You can read on the Male Reproductive System (Scrotum and its Contents) here.

 

12. Which of the following is NOT a gamete?

  1. Ovary
  2. Sperm
  3. Ova
  4. Pollen grains

 

13. Fertilization takes place in the _____.

  1. Ovary
  2. Oviduct
  3. Uterus
  4. Cervix

 

14. The hormone responsive for ovulation is _____.

  1. Oestrogen
  2. Follicle Stimulating Hormone (FSH)
  3. Luteinizing Hormone (LH)
  4. Thyroid Hormone

 

15. A particulate Nature of matter is the _____.

  1. Ion
  2. Compound
  3. Element
  4. Mixture

    5. You can read on the Concept of Matter here.

 

16. Sodium has an atomic mass of 23. Its number of electrons is _____.

  1. 32
  2. 23
  3. 11
  4. 12

    5. Please read on the Periodic Table of Elements here.

 

17. The lightest known element is _____.

  1. Sodium (Na)
  2. Helium (He)
  3. Oxygen (O)
  4. Hydrogen (H)

Please read on what every Student is expected to know here.

18. An element used in filling balloons is _____.

  1. Oxygen
  2. Helium
  3. Nitrogen
  4. Carbon

 

19. Group of ions with a specific charge are termed _____.

  1. Radicals
  2. Valence Electrons
  3. Compounds
  4. Ions

 

20. Carbon Hydroxide is chemically represented as _____.

  1. Ca(OH)2
  2. CaOH
  3. Can2OH
  4. CaOH2

 

21. Blood is a mixture separated by _____.

  1. Distillation
  2. Fractional Distillation
  3. Separating Funnel
  4. Centrifugation

    5. Please read on the Separation of Blood (Mixtures) here.

 

22. Which of the following element is a metalloid?

  1. Silicon
  2. Carbon
  3. Magnesium
  4. Argon

 

23. The group VIII elements can also be called the following gases except _____.

  1. Alkali gas
  2. Noble gas
  3. Inert gas
  4. Rare gas

 

24. _____ is a fraction of petroleum used for road surfacing.

  1. Fuel oil
  2. Bitumen
  3. Natural gas
  4. Heavy oil

    5. Please read on Fractional Distillation of Petroleum here.

 

25. NH4+ is simply referred to as _____.

  1. Nitrogen Hydride ion
  2. Hydrogen Nitride ion
  3. Ammonia ion
  4. Ammonium ion

    5. Please read on Lewis Acid. Answer is present here.

 

26. Scientists involved in oil exploration are called _____.

  1. Geologist
  2. Geophysicists
  3. Mechanical Engineers
  4. Chemical Engineers

 

27. The components of crude oil are separated in the _____.

  1. Distilling column
  2. Separating Column
  3. Separating Funnel
  4. Fractionating column

    5. Please read on the Separation of Crude oil here.

 

28. The Standard International (SI unit for current is _____.

  1. Ohm
  2. Ampere
  3. Volts
  4. Watt

    5. Please read on the Fundamental and Derived Units in Physics. Answer is present here.

 

29. _____ power is involved in the Lifting of 25 litres of water via the use of hands.

  1. Mechanical
  2. Potential
  3. Kinetic
  4. Electrical

 

30. A ball of mass 12000g is released from a height of 10m. What is the potential energy of the ball)? (g=10m/s)

  1. 1.2KJ
  2. 1200KJ
  3. 120000KJ
  4. 1200000KJ

 

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You can attempt Len Academy Basic Science Examination Questions for JSS1, 2nd Term here.

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Amazing facts in Basic Science

According to scientific research, if the first tear drop comes from the right eye, it’s tears of joy. If it comes from the left eye, then it is as a result of pain

Dentistry is the oldest profession in the world. This is considered true because a research conducted by the University of Bologna, Italy on a 14,000-year-old skull found that one rotten tooth in the jaw had been deliberately scoured and scraped with a dental tool

Scientific research has it that the human nose can distinguish more than a trillion different odors

Tiger fur and skin - Len Academy

Tigers have striped fur. So also is their skin

Red-Billed Quelea - Len Academy

The most common wild bird in the world is native to Africa, and it's the red-billed quelea with a population estimated to be around 1.5 billion

Of all animals, mosquitoes hold the record of killing most humans annually. They are responsible for the deaths of 725,000 - 1,000,000 persons yearly

Antibiotics fights and kills bacteria. However, they do nothing to a virus

All insects have six legs. However, dragonfly has six legs but can't walk

The chin is defined as the protruding part of the face below the mouth, formed by the apex of the lower lip. It is shown below:

Chin - Len Academy

Interestingly, humans are the only animals with chin

Cranberries - Len Academy

Ripe cranberries will bounce like a ball. For this reason, they are nicknamed 'bounceberries'. They will also float in water

Notable points in Basic Science

We have six classes of food. These are:

  1. Carbohydrates

  2. Proteins

  3. Fats and Oils

  4. Vitamins

  5. Mineral Salts

  6. Water

In humans, roughages are not classified as one of the classes of food. This is so because they aren't digested. Instead, roughages facilitate the movement of bowels in the large intestine (colon); and for this reason, they can become useful in treating constipation.

Food refers to anything that is ingested by living organisms, giving them nutrients and thus enabling them to stay alive.

As an instance, 99% of a panda's diet is bamboo. In this case, bamboo is considered as food to a panda since it provides a source of nutrient and keeps it alive. This is shown in the image below:

Panda eating bamboo - Len Academy

Please read more on food here

The only process in nature that actively enriches our atmosphere with oxygen is photosynthesis. Every other process like respiration, burning and combustion takes away oxygen from it. In addition, they introduce carbon(IV)oxide (CO2) into the atmosphere.

Photosynthesis is also the only process that takes away carbon(IV)oxide (CO2) from the atmosphere.

Photosynthesis is defined as a process by which green plants manufacture food by utilizing carbon(IV)oxide and water in the presence of sunlight.

Oxygen is given off as a by-product of photosynthesis. In regards to this, it is recommended that each person plants a tree.

Matter is composed of particles which can be:

  1. Tightly packed together (as seen in solids).

  2. Loosely packed together (as seen in liquids).

  3. Completely separated (as seen in gases).

The movement of the particles of matter is a function of the overall kinetic energy present in them. You can think of kinetic energy as energy in motion.

An increase in the particles' vibrational, rotational or translational motion will imply an increase in temperature while a decrease in the particles motion (vibrational, rotational and translational) will mean a decrease in temperature. Based on this knowledge, we can therefore define temperature as the measure of the average kinetic energy possessed by the particles of matter.

You can read on the concept of matter here

Intelligence Quotient (IQ) is a score derived from a set of standardized tests developed to measure a person's cognitive abilities in relation to their age group.

IQ may also be defined as the ratio of mental age (MA) to chronological age (CA) multiplied by 100.

Below are some formulas pertaining Intelligence Quotient:

  • IQ = MA x 100 ÷ CA

  • MA = Mental age

  • CA = Chronological age

  • IQ above 100 = Brilliance

  • IQ that equals 100 = Average

  • IQ below 100 = Below Average